Vii5i

What an interesting thriller. The basic scheme has nothing new: there's a killer at loose, making fun of useless cops and challenging them to find him or her. What made this interesting is the challenge: the killer has set up a geocaching mystery for the cops. The author is a geocacher and knows what she's writing about. If you don't care about geocaching, this is a decent thriller and that's it, but for geocachers, this is a must.